Decorative film having foaming layer

Abstract

A decorative film comprising a decorative layer, an intermediate layer and a pressure sensitive adhesive layer, wherein the intermediate layer comprises foaming layers, and an expansion ratio on the decorative layer side is higher than an expansion ratio on the tackifier layer side.

I claim: 
     
       1. A decorative film comprising a decorative layer, an intermediate layer and a pressure sensitive adhesive layer, wherein said intermediate layer comprises a foaming layer and two sides, and an expansion ratio on the side of said decorative layer is made higher than an expansion ratio on the side of said pressure sensitive adhesive layer. 
     
     
       2. A decorative film according to claim 1, wherein said expansion ratio of said intermediate layer is at least 4 times on the side of said decorative layer and is less than 4 times on the side of the said pressure sensitive adhesive layer. 
     
     
       3. A decorative film according to claim 1 wherein said intermediate layer comprises a foaming layer and a non-foaming layer, said foaming layer is disposed on the side of said decorative layer and said non-foaming layer is disposed on the side of said pressure sensitive adhesive layer. 
     
     
       4. A decorative film according to claim 1, wherein a principal component of said intermediate layer comprises a vinyl chloride resin. 
     
     
       5. A decorative film according to claim 1, wherein the pressure sensitive adhesive layer contains elastic microspheres having a number average diameter of 50 to 100 μm. 
     
     
       6. A decorative film according to claim 3, wherein the thickness of said foaming layer is from 0.5 to 1.0 mm, and the thickness of said non-foaming layer is from 0.05 to 1.0 mm. 
     
     
       7. A decorative film according to claim 2 wherein said intermediate layer comprises a foaming layer and a non-foaming layer, said foaming layer is disposed on the side of said decorative layer and said non-foaming layer is disposed on the side of said pressure sensitive adhesive layer. 
     
     
       8. A decorative film according to claim 2, wherein a principal component of said intermediate layer comprises a vinyl chloride resin. 
     
     
       9. A decorative film according to claim 3, wherein a principal component of said intermediate layer comprises a vinyl chloride resin. 
     
     
       10. A decorative film according to claim 2, wherein the pressure sensitive adhesive layer contains elastic microspheres having a number average diameter of 50 to 100 μm. 
     
     
       11. A decorative film according to claim 3, wherein the pressure sensitive adhesive layer contains elastic microspheres having a number average diameter of 50 to 100 μm. 
     
     
       12. A decorative film according to claim 4, wherein the pressure sensitive adhesive layer contains elastic microspheres having a number average diameter of 50 to 100 μm. 
     
     
       13. A decorative film according to claim 4, wherein the thickness of said foaming layer is from 0.5 to 1.0 mm, and the thickness of said non-foaming layer is from 0.05 to 0.10 mm. 
     
     
       14. A decorative film according to claim 5, wherein the thickness of said foaming layer is from 0.5 to 1.0 mm, and the thickness of said non-foaming layer is from 0.05 to 0.10 mm. 
     
     
       15. A decorative film comprising a decorative layer, an intermediate layer having two sides, and a pressure sensitive adhesive layer, wherein said intermediate layer comprises a foaming layer on one side and a non-foaming layer on the second side, said foaming layer is disposed on the side of said decorative layer and said non-foaming layer is disposed on the side of said pressure sensitive adhesive layer.   
     
     
       16. The decorative film according to claim 15, wherein said expansion ratio of said intermediate layer is at least 4 times on the side of said decorative layer and is less than 4 times on the side of said pressure sensitive adhesive layer. 
     
     
       17. The decorative film according to claim 15, wherein a principal component of said intermediate layer comprises a vinyl chloride resin. 
     
     
       18. The decorative film according to claim 15, characterized in that the pressure sensitive adhesive layer contains elastic microspheres having a number average diameter of 50 to 100 μm. 
     
     
       19. The decorative film according to claim 15, wherein the thickness of said foaming layer is from 0.5 to 1.0 mm, and the thickness of said non-foaming layer is from 0.05 to 0.10 mm.